}

  @MapFeature.Require({SUPPORTS_PUT, ALLOWS_NULL_VALUES})
  public void testPutNullValue_supported() {
    int size = getNumElements();

    multimap().put(k3(), null);

    assertGet(k3(), Lists.newArrayList((V) null)); // ImmutableList.of can't take null.
    assertEquals(size + 1, multimap().size());
  }

  @MapFeature.Require(value = SUPPORTS_PUT, absent = ALLOWS_NULL_VALUES)

 * @since 10.0
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public final class EqualsTester {
  private static final int REPETITIONS = 3;

  private final List<List<Object>> equalityGroups = Lists.newArrayList();
  private final RelationshipTester.ItemReporter itemReporter;

  /** Constructs an empty EqualsTester instance */
  public EqualsTester() {
    this(new RelationshipTester.ItemReporter());
  }

  }

  @MapFeature.Require({SUPPORTS_PUT, ALLOWS_NULL_VALUES})
  public void testPutNullValue_supported() {
    int size = getNumElements();

    multimap().put(k3(), null);

    assertGet(k3(), Lists.newArrayList((V) null)); // ImmutableList.of can't take null.
    assertEquals(size + 1, multimap().size());
  }

  @MapFeature.Require(value = SUPPORTS_PUT, absent = ALLOWS_NULL_VALUES)

  }

  private static TestSuite wrappedHashMapTests(
      WrappedHashMapGenerator generator, String name, Feature<?>... features) {
    List<Feature<?>> featuresList = Lists.newArrayList(features);
    Collections.addAll(
        featuresList,
        MapFeature.GENERAL_PURPOSE,
        CollectionFeature.SUPPORTS_ITERATOR_REMOVE,
        CollectionSize.ANY);

        multiset.addAll(ELEMENTS_TO_FILTER_OUT);
        return Multisets.filter(multiset, PREDICATE);
      }

      @Override
      public List<String> order(List<String> insertionOrder) {
        return Lists.newArrayList(LinkedHashMultiset.create(insertionOrder));
      }
    };
  }

  }

  public void testEncloseAll_nullValue() {
    List<@Nullable Integer> nullFirst = Lists.newArrayList(null, 0);
    assertThrows(NullPointerException.class, () -> Range.encloseAll((List<Integer>) nullFirst));
    List<@Nullable Integer> nullNotFirst = Lists.newArrayList(0, null);
    assertThrows(NullPointerException.class, () -> Range.encloseAll((List<Integer>) nullNotFirst));
  }

  /** Suppressor that records suppressions. */
  private static class TestSuppressor implements Closer.Suppressor {

    private final List<Suppression> suppressions = Lists.newArrayList();

    @Override
    public void suppress(Closeable closeable, Throwable thrown, Throwable suppressed) {
      suppressions.add(new Suppression(closeable, thrown, suppressed));
    }
  }

    fakePool.runAll();
    assertEquals(5, totalCalls.get());
    assertFalse(fakePool.hasNext());
  }

  public void testOrdering() {
    final List<Integer> callOrder = Lists.newArrayList();

    class FakeOp implements Runnable {
      final int op;

      FakeOp(int op) {
        this.op = op;
      }

      @Override
      public void run() {
        callOrder.add(op);

        return _columnUpdatedTime;
    }

    public ColumnInfo columnVirtualHost() {
        return _columnVirtualHost;
    }

    protected List<ColumnInfo> ccil() {
        List<ColumnInfo> ls = newArrayList();
        ls.add(columnContent());
        ls.add(columnCreatedBy());
        ls.add(columnCreatedTime());
        ls.add(columnSortOrder());
        ls.add(columnTerm());
        ls.add(columnUpdatedBy());

    Random random = new Random(0); // will iteratively make more debuggable, each time it breaks
    for (int totalInsertions = 0; totalInsertions < 200; totalInsertions++) {

      List<Sink> sinks = Lists.newArrayList();
      for (int chunkSize = 4; chunkSize <= 32; chunkSize++) {
        for (int bufferSize = chunkSize; bufferSize <= chunkSize * 4; bufferSize += chunkSize) {
          // yes, that's a lot of sinks!